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Expansion shock waves in the implosion process from a time-reversible molecular-dynamics simulation of a dual explosion process
http://hdl.handle.net/2297/6602
http://hdl.handle.net/2297/6602d1c82c51-afa4-4984-9768-20e6c63c1a0f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
TE-PR-KOMATSU-N-056103.pdf (413.1 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-10-03 | |||||
| タイトル | ||||||
| タイトル | Expansion shock waves in the implosion process from a time-reversible molecular-dynamics simulation of a dual explosion process | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
Komatsu, Nobuyoshi
× Komatsu, Nobuyoshi× Abe, Takashi |
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| 提供者所属 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 金沢大学大学院自然科学研究科機能開発システム | |||||
| 提供者所属 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 金沢大学工学部 | |||||
| 書誌情報 |
Physics of Fluids 巻 19, 号 5, p. 056103-1-056103-6, 発行日 2007-05-01 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1070-6631 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1063/1.2717725 | |||||
| その他の識別子 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 056103 | |||||
| 出版者 | ||||||
| 出版者 | American Institute of Physics | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Why does not an expansion shock wave exist in a gaseous medium in nature? The reason has been widely believed to be the irreversibility in nature, while an obvious demonstration for this belief has not been accomplished yet. In order to resolve the question from a microscopic viewpoint, an implosion process dual to an explosion process was investigated by means of the molecular-dynamics method (MD). To this aim, we employed a "bit-reversible algorithm (Bit MD)" that was completely time-reversible in a microscopic viewpoint and was free from any round-off error. Here we show that, through a dual implosion simulation (i.e., a time-reversible simulation of the explosion), a kind of expansion shock wave is successfully formed in the Bit MD simulation. Furthermore, we show that when the controlled noise is intentionally added to the Bit MD, the expansion shock wave disappears dramatically and turns into an isentropic expansion wave, even if the noise is extremely small. Since the controlled noise gives rise to the irreversibility in the Bit MD simulation, it can be concluded that the irreversibility in the system prohibits the expansion shock wave from appearing in the system. © 2007 American Institute of Physics. | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
